[Elecraft] KPA-1500 Efficiency As A Function of Input Power

[ANDY DURBIN]

"There was a similar post about the KPA500 in the last year or so. Elecraft responded that the amp was designed for 500 Watts running less was less efficient and running amp at low power was doing it no favors. "

Here is an example of measured PA dissipation for a KPA500:

https://www.dropbox.com/s/bq0v2740t3iztnj/KPA500%20PA%20DISS%20for%2040%20meters.pdf?dl=0

73,
Andy k3wyc